Magnetic recording medium and method

Details Magnetic recording medium and method Magnetic recording medium and method

1985-08-19

1987-06-02

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

427 44, 427128, 427130, 428694, 428900, B32B 516

Patent

active

046703403

ABSTRACT:
The invention provides a method for manufacturing a magnetic recording tape which is free from the problems of the phenomenon of dropout as well as runout of the tape roll throughout the life of the tape. The inventive method comprises providing a coating layer on a surface of a film base of the tape having been provided with the magnetic coating layer on the other surface with a coating composition comprising a radiation-sensitive curable polymeric material, which is a thermoplastic resin modified to be radiation-sensitive with or without admixture of a thermoplastic elastomer, and a filler dispersed therein and, prior to winding of the tape into a roll, irradiating the coating layer with a high energy radiation of, preferably, electron beams whereby the coating composition is fully radiation-cured to form a backing layer of the tape.

REFERENCES:
patent: 3293066 (1966-12-01), Haines
patent: 3617378 (1971-11-01), Beck
patent: 3881046 (1975-04-01), Akashi et al.
patent: 4260466 (1981-04-01), Shirahata et al.
patent: 4309482 (1982-01-01), Suzuki et al.
patent: 4335183 (1982-06-01), Hosaka
patent: 4343831 (1982-08-01), Tsusi et al.

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